David Moe Posted October 12, 2007 Share Posted October 12, 2007 Make Offer @ moetiki@mac.com. Link to comment Share on other sites More sharing options...
chuck colburn Posted October 12, 2007 Share Posted October 12, 2007 Make Offer @ moetiki@mac.com. Looks like a .3 no a 3 Link to comment Share on other sites More sharing options...
David Moe Posted October 13, 2007 Author Share Posted October 13, 2007 Looks like a .3 no a 3 Yes, sorry about my shorthand. It is a Tiffen 6.6 X 6.6 ND 0.3 Neutral Density Glass Filter (1 Stop) to be exact. Link to comment Share on other sites More sharing options...
Mark Dunn Posted October 13, 2007 Share Posted October 13, 2007 ND3 or N3 is the correct designation, meaning point 3 or absorbing one stop. So, ND6 for 2stops, ND9 for three. If an ND really had a density of 3.0 (I suppose the designation would be ND30) it would absorb ten stops. Maybe handy for the surface of Mercury, but not needed anywhere on this planet. By way of demonstration, here's the engraving on a Tiffen 85N6. Link to comment Share on other sites More sharing options...
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